Finding the Third Proportional to 62,931.38 and 87,987.38

Step by Step Solution

1. Step 1: Write the proportion equation
   62,931.38 : 87,987.38 = 87,987.38 : x
2. Step 2: Convert to fraction form
   62,931.38/87,987.38 = 87,987.38/x
3. Step 3: Cross multiply
   62,931.38x = 87,987.38 × 87,987.38
4. Step 4: Simplify right side
   62,931.38x = 7,741,778,159.39
5. Step 5: Solve for x
   x = 7,741,778,159.39/62,931.38
6. Step 6: Final answer
   x = 123,019.37